<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        img {
            width: 200px;
            height: 200px;
        }
    </style>
</head>

<body>
    <div id="app">
        <!-- <img src="./img/1.jpg" v-show="true"> -->
        <!-- display:none -->
        <button @click="dianji">点击</button>
        <img src="./img/1.jpg" v-show="isShow">
        <input type="button" value="加年龄" @click="add">
        <img src="./img/1.jpg" v-show="age>18">

    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <script>
        var app = new Vue({
            el: "#app",
            data: {
                isShow: false,
                age: 17
            },
            methods: {
                dianji() {
                    this.isShow = !this.isShow
                },
                add() {
                    this.age++
                }
            }
        })
    </script>
</body>

</html>